/

Point your AI agent at freehire and let it find you a job. A CLI and an MCP server over the whole job API — no browser.

Get the CLI →

Toss

40 jobs

Posted Sort

40 jobs Posted Sort

Security Researcher (APT/인프라 모의해킹)

A Security Researcher performs simulated hacking (APT attacks) and infrastructure diagnostics to proactively identify and mitigate vulnerabilities across Toss’s financial systems, collaborating closely with engineering teams to enhance security while balancing usability.

DevOps Docker Git Gradle Grafana +10 skills

Server Developer (Platform/Product)

Develops and maintains core insurance CRM, ERP, and CMS systems for agents, focusing on automation, security, and scalability using Kotlin/Java and Spring Boot.

API CRM ELK ERP Git +16 skills

Server Developer (여신)

Builds and migrates Toss Bank’s lending backend systems, transitioning legacy monolithic core-banking code to Kotlin/Spring microservices while ensuring zero-tolerance accuracy for loan calculations and regulatory compliance.

Java Kotlin Spring

Server Developer (계정계)

Builds and refactors core banking systems (accounting layer) using Java/Kotlin and Spring, migrating legacy monoliths to scalable microservices for Toss Bank’s digital finance platform.

Java Kotlin MySQL Oracle Spring

Server Developer (생산성)

Builds and maintains scalable backend services powering Toss’s fintech products like payments, loans, and ads using Kotlin/Spring, MySQL, Kafka, and Redis.

Hadoop Kafka Kotlin MongoDB MySQL +2 skills

Server Developer (3년 이상)

Develops and maintains payment systems, focusing on scalability and reliability. Core technologies include Java, Kotlin, Spring, Redis, Kafka, and MySQL.

Cloud DevOps Elasticsearch Gradle Java +12 skills

Server Developer (3년 이하)

📢 지원자 모두에게 코딩테스트 전형의 기회가 주어져요 오직 토스페이먼츠에서만 할 수 있는 경험 “시행착오를 줄여주는 동료들과 함께 나의 가능성을 새롭게 발견해요” 토스페이먼츠를 활용하는 여러 가맹점에 영향을 미치는, 20년 이상의 장기적인 수명을 가진 제품을 만들어요. 이전 기술의 히스토리를 모두 파악하고 이를 토대로 개선 방안을 찾는, 높은 복잡도와 난이도를 가진 업무들을 경험할 수…

API Cloud Elasticsearch Gradle Java +9 skills

Server Developer (Market Platform)

Develops and optimizes high-performance real-time trading platforms (e.g., stock market data feeds) for Toss Securities, designing scalable architectures for APIs/WebSockets, low-latency event processing, and inter-institution communication using Go, Kotlin/Spring, and Kafka.

API Kafka Kotlin MySQL NATS +2 skills

Server Developer (Messaging Platform Team)

Server Developer building and operating Toss's messaging platform (push, Alimtalk, email) and A/B testing infrastructure using Kotlin, Java, Spring Boot, Kafka, and MySQL/MongoDB/Redis.

ELK Grafana Hibernate Java JPA +9 skills

Server Developer (Platform)

Builds and operates high-availability platform services for Toss Bank, including messaging, API gateways, monitoring, and caching, using Kotlin/Java and Spring ecosystems.

API API Gateway Argo CD Ceph Cloud +19 skills

Server Developer (Server Platform Team)

Build and maintain the core platform infrastructure supporting all Toss services—distributed systems, API gateways, and developer productivity tools. Work with Kotlin/Java, Spring Boot/Cloud, Redis, Kafka, and Kubernetes to improve performance, security, and reliability across a high-traffic fintech environment.

API API Gateway Argo CD Cassandra Cloud +26 skills

Server Developer (Product)

Builds and scales server systems for Toss Income, a fintech service simplifying tax refunds and income management using Kotlin, Spring, and AWS.

AWS Cloud Docker Elasticsearch Git +11 skills

Server Developer (Product)

Builds and maintains scalable, secure banking services using Kotlin/Java and Spring, focusing on high-traffic systems and innovative fintech products in a collaborative squad model.

Argo CD Ceph Cloud Docker ELK +17 skills

120M – 200M KRW

Server Developer (SRE)

Builds and operates resilient payment infrastructure, focusing on stability, scalability, and low latency using Java, Kubernetes, and observability tools.

Control-M Docker Git Gradle Grafana +11 skills

Site Reliability Engineer (SRE Team)

Site Reliability Engineer at Toss in Seoul, maintaining and improving the stability, scalability, and performance of high-traffic systems using Kubernetes, Java/Kotlin, and monitoring tools.

Argo CD Cassandra Ceph Cloud Docker +22 skills

Site Reliability Engineer

Build and maintain monitoring, observability, and performance-testing systems to keep Toss Bank’s high-traffic services stable and scalable using Kotlin/Java, Kubernetes, Istio, Kafka, and Prometheus.

Argo CD Ceph Cloud Docker ELK +21 skills

Server Developer (Platform)

# 토스 서버의 조직 구조를 알려드려요 토스의 Server Developer는 Product, Platform, Productivity 세 개의 Chapter로 나뉘어 일합니다. 직무명은 모두 같지만, 각 Chapter마다 집중하는 업무 영역에 차이가 있어요. Product Chapter는 유저가 직접 사용하는 토스의 서비스를 개발해요. 단순한 기능 구현을 넘어, 기술을 통해 비즈니스의…

Hadoop Kafka Kotlin MongoDB MySQL +2 skills

Site Reliability Engineer

Site Reliability Engineer on Toss Securities' SRE team in Seoul, responsible for preventing and responding to incidents on a high-traffic service: building monitoring/alerting around SLOs, performing deep root-cause analysis (down to Linux kernel, network, and eBPF level), and automating operations with internal tooling. Stack includes Java/Kotlin, Kubernetes/Istio, Prometheus/Grafana/ELK, and Go/

Argo CD Bash CI/CD ELK GitHub +24 skills

Server Developer (Japan Product)

합류하게 될 팀에 대해 알려드려요 Server Developer (Japan)은 Global Team에 속해 업무해요. Global Team은 일본 시장에서 현지 사용자를 위한 새로운 디지털 금융 경험을 만들고 있어요. 서버 개발자는 현지 맥락에 맞게 제품과 기술을 새롭게 설계하고, 특정 기능에 머무르기보다 여러 제품과 기술 영역을 연결하며 담당한 문제의 해결 방향과 기술적 선택을…

API Argo CD CI/CD ELK GitHub +17 skills

Server Developer (Product Foundation)

# 합류하게 될 팀에 대해 알려드려요 - 토스뱅크 Server Developer (Product Foundation)는 Product Foundation(제품 기반) 도메인 소속으로, 토스뱅크의 기반이 되는 제품을 만들고 있어요. - 혁신적인 은행 상품이 빠르고 안정적으로 출시될 수 있게 지원하며, 고객이 은행 서비스를 안심하고 이용할 수 있도록 공통 기반 시스템을 만들어요. - 팀원들이…

AI Argo CD Ceph Cloud Docker +20 skills